It being a long journey train, charting is done in legs.
As train originates at 00:15 First leg of charting is done at around 20:00 for General Quota Tickets along with RLGN ticktes upto WARDHA JN.
Your journey lies in the second phase therefore, your PNR will be charted in second leg, which will be prepared in morning at around 09:00 for Nagpur onwards journey (only for RLGN quota bookings)